[Case Study] Reduction of BOD and COD in the Metal Processing Industry <Ishikawa Prefecture>

The case where the elimination of hazardous substances (dilute sulfuric acid) from the used chemicals has reduced storage tasks and improved safety.

We would like to introduce a case study of the implementation of "Aqua Nature Plus" and "Aqua Blaster" at a metal processing factory. The challenge was that the compounds used for barrel polishing contained organic substances that increased BOD and COD, making it impossible to meet the internal standards for BOD and COD with the current treatment method (coagulation treatment). After implementation, the number of chemicals used was reduced from five to two, significantly decreasing the effort required for chemical replenishment and adjustment work. BOD and COD levels also dropped to below 30 mg/L, clearing the internal standards. [Case Overview (Partial)] ■ Challenges - Reduce BOD and COD, which exceed internal standards, to below the internal standard values. - Simplify the adjustment of coagulation issues as much as possible during trouble occurrences. ■ Results - Reduced running costs by over 4 million yen annually, bringing them down to about 50% of pre-implementation levels. *For more details, please refer to the related links or feel free to contact us.

Water Treatment